Year % (cumulative) 1991 63.3660202026367 2005 99.2886123657227 2006 99.1391677856445 2007 99.2857131958008 2008 99.1443328857422 2009 99.3131866455078 2010 99.3853073120117 2011 99.5595169067383 2012 99.7206192016602 2013 100 2014 99.8982772827148 2015 99.8564910888672 2016 99.8225326538086 2017 99.7824935913086 2018 99.8855743408203 2019 99.8468475341797 2020 99.8341598510742 2021 99.7397918701172 2022 99.6892852783203